Javascript RegEx - Start and End of String Anomalies

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So im trying some really basic RegEx out for the first time and I've been told that theres a few ways of stating the start and end of the string.

One way would be '\A' & '\Z' and the other would be '^' & '$'.

For some reason when running this in JS, the later is the only option that actually works.

Does anyone know why that might be please?

var str = "123456",
    pattern1 = new RegExp("^\\d{6}$"),
    pattern2 = new RegExp("\A\\d{6}\Z");
    // pattern2 = /^\d{6}$/;

if(pattern1.test(str)){
    alert('pattern 1 match!'); 
}else{
    alert('pattern 1 no match!'); 
}

if(pattern2.test(str)){
    alert('pattern 2 match!'); 
}else{
    alert('pattern 2 no match!'); 
}

asked 22 secs ago

Oliver Evans

121

Javascript RegEx - Start and End of String Anomalies